johannschmith says;
"I've flown for quite a few operators in my time and I've yet to see an Ops Manual that genuinely tells the crew to G/A if they're unhappy with the approach, safe in the knowledge that there will be NO COMEBACK to them."
You could always join the UK's favourite airline which is the butt of constant crticism in every aspect of their operations by all the enlightened souls who contribute to these forums (or is it fora?), open their Ops manual and find that indeed, if you are unhappy with the approach then you MUST Go-around. Nowhere does it say that you will be subseqently questioned as to why you did so.
So, yes, there are airlines who adopt such an enlightened policy, you just need to be fortunate enough to actually work for one of them.